Electric switch.



PM L. TEMPLE.

ELECTRIC SWITCH.

AIPLIGATION 31mm 00124, 1911.

1,122,045, Patented Dec.22,1914.

WITNESSES: I INVENTOR [2 4295 1,") Mb fwd, a? Q BY W TTOR/VEYS unwrapsrnrps i nnfr onuicn.

FEEDERIG LANDON TEMPLE, OF CEDAR GROVE, NEW JERSEY, ASSIGNGB TO THEBRYANT ELECTRIC COMPANY, OF BBIDGEPORT, CONNECTICUT, A CORPORATION 0FCONNECTICUT.

ELECTRIC SWITGH.

To all whom it may concern:

Be it known that I, Fnnonnrc Lennon TEMPLE, a subject of the King ofGreat Britain, and residing at Cedar Grove in the county of Essex andState of New ersey, have invented a certain new and imroved ElectricSwitch, of which-the folowing is a specification.

My invention relates to electric switches, and particularly to doubleole switches, the object of my invention being to rovide a device ofthis character suitable lor certain types of lighting systems and otheruses in which it. is desired to not only employ a relatively heavycurrent but also to maintain one branch of the circuit closed while theswitch is open.

in the accompanying drawings in which my invention is exemplified,Figure 1 is a perspective View of a rotary snap switch; Fig. 2 is a planof one of the switch contacts; and Fig. 3 is a diagram of a lightingcircuit in which a switch of this character ma be advantageouslyemployed.

n a lighting system of the character described in my copendingapplication Serial No. 646,461, the various switch sockets arecontrolled independent of the socket switch, from a remote switch in themanner therein described. Where a number of lights are to be thuscontrolled a sin'gle pole switch must be inconveniently-large to carrysafely the necessary current, or a double pole switch must be employed.Inasmuch as double pole switches as now constructed, break both branchesof the circuitin the off position, these are not available in a systemof this character in which one of the branches of the circuit passingthrou h the switch must be com leted in the 0%? position of the switch.1y new switch acomplishes this result. In the illustrated embodiment ofmy invention, which is applicable to double pole switches of all types,I have shown a rotary snap switch with usual insulating base 10 uponwhich are mounted the terminals 11 and 12 for line wire'A and terminals13 and 14 for line with their respective pairs of switch terminals 18-19and 20-21.

Specification of Letters Patent.

Patented as. an, acre.

Application filed GOtObtT 24, 1911. serial H0. 656,356.

In order to maintain the circuit through the line wire A while theswitch is in the ofi' position, the switch contact 17 is provided withtwo pairs of arms, ab, c-d, one or the other of which will engage theswitch terminals 20-21 when the contact 16 is out of engagement with theswitch terminals 1819.

It will readily be understood that upon the rotation of the switchspindle 15 by the handle 22, the switch circuit is placed in "011 or offposition depending wholly upon the position of the contact arm 16, sincein all positions of rest the switch contact 17 connects the terminals2021 and keeps the line connection through this branch intact.Consequently in the .off position of the switch, the lamps a: may bestill controlled through their switches :23. while in the on positionthe lamps are put in circuit through the remote switch. Obviously theinvention is, not limited to the particular type of double pole switchillustrated, nor is its utility confined to the particular system ofwiring described.

I c aim as my invention 1. in a double pole switch, two pairs of lineterminals for the respective lines. a double pole double break switchmechanism coiiperating with said terminals and compris; ing two contactmembers, one of which has means for connecting one pair of terminals inboth on and off position of the switch mechanism and the other contacthaving means for connecting the other pair ofterminals in the onposition of the switch mechanism only.

2. A double pole switch having a double make and break switch mechanism,a twoarm switch bar for closing one pair of poles in only one positionof the switch and a four-arm switch bar for closing the other pair ofpoles in all positions of the switch, substantially as described.

In testimony whereof I have signed my name to this specification, in thepresence of two subscribing witnesses.

FEEDER-1C LANDON TEMPLE.

Witnesses:

WALTER Anna, L. H. Gnoru.

